Patent US2797990A successfully refreshed from Google Patents.
US2797990A
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Flux for magnesium alloys containing zirconium
Assignee: Dominion Magnesium Ltd
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Filing: 1954-03-01
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Granted: 1957-07-02
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Expires: 1974-03-01
Abstract
No abstract record available.
Inventors
- 👤 Froats Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:39
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/10; B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A FLUX FOR INTRODUCING ZIRCONIUM INTO MAGNESIUM IN THE PRODUCTION OF MAGNESIUM BASE ALLOYS WHICH CONSISTS ESSENTIALLY OF A FUSED MIXTURE OF BARIUM CHLORIDE AND CALCIUM CHLORIDE WITHIN THE PROPORTIONS OF 45 TO 55% BY WEIGHT OF EACH, AND HAVING AN OPTIMUM MELTING TEMPERATURE NOT SUBSTANTIALLY EXCEEDING 630*C., AND 15 TO 35% BY WEIGHT OF MAGNESIUM FLUORIDE, SAID FLUX BEING SUBSTANTIALLY FREE FROM OTHER CHLORIDES.
Claim 2
Dependent Claim
65 words
A FLUX FOR INTRODUCING ZIRCONIUM INTO MAGNESIUM IN THE PRODUCTION OF MAGNESIUM BASE ALLOYS WHICH CONSISTS ESSENTIALLY OF A FUSED MIXTURE OF BARIUM CHLORIDE AND CALCIUM CHLORIDE WITHIN THE PROPORTIONS OF 45 TO 55% BY WEIGHT OF EACH, AND HAVING AN OPTIMUM MELTING TEMPERATURE NOT SUBSTANTIALLY EXCEEDING 630*C., AND 15 TO 35% BY WEIGHT OF MAGNESIUM FLUORIDE, SAID FLUX BEING SUBSTANTIALLY FREE FROM OTHER CHLORIDES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |